The following is the frequency distribution of the sample weight from field of chickens in grams, size 100, selected from a farm after 45 days. weight 720-700 700-680 680-660 660-640 640-620 620-600 No. of 10 20 25 20 15 10 chickens Draw the following 1- Histogram 2- A relative histogram 3- Polygon 4- A Relative Frequency Curve

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Q: o Find Variance

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